code: def tearDown(self):
      if path.isfile(self.output):
          remove(self.output)
  
file_path: auptimizer/tests/dlconvert/test_keras_to_pb.py
imports: import unittest
  from absl import flags
  from os import path, remove, environ
  import json
  from six import PY2
label_desc: Use image node_id 4 for calling the KerasToPBTestCase obj's underlying member method code with example usage: obj.tearDown() without return types